Year	Cases per 100,000
1990	25.75
1991	25.81
1992	25.86
1993	25.92
1994	25.98
1995	26.04
1996	26.07
1997	26.12
1998	26.17
1999	26.22
2000	26.29
2001	25.99
2002	25.71
2003	25.43
2004	25.16
2005	24.89
2006	24.98
2007	25.07
2008	25.17
2009	25.26
2010	25.37
2011	25.54
2012	25.72
2013	25.9
2014	26.08
2015	26.27
2016	26.47